Oxygen III Narrowband Filter

Closed, opens tomorrow 10amIndependent shop in BallardDirections

Available from Cloudbreak Optics when we last checked, in the last two days. Sold from the shop’s own store; the price there is the one that counts.

Description OIII 8nm Narrow Band filters isolate the doublet emission of doubly ionized Oxygen. After ionized hydrogen, this is the next most common emission when imaging nebulae. Doublet emission occurs at 495.9 and 500.7 nm. Specifications Parfocal for systems f/4.0 or slower Transmitted wavefront better than 0.25 waves/inch Parallelism: less than 30 arcsec Made in America